I absolutely LOVE this game! The UI, SFX, art, and concept all rock! I had a blast playing your game. Thank you for the explanation in your GDD of how you got the trees to look so fantastic. There does seem to be some lag the longer the game goes on and I suspect it may have to do with particle handling.
If I could rate the game I would give it a 10/10! Great job and I hope you keep making awesome games like this one!